CN116358299A - 一种rh炉真空室用镁铬砖及制备方法 - Google Patents
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Abstract
本发明涉及一种RH炉真空室用镁铬砖,包括内砖,所述内砖的顶部与底部均固定安装有数量为两个的支撑条,所述内砖的外表面设有外套砖。该RH炉真空室用镁铬砖及制备方法,在内砖表面套一层外套砖,其中,内砖采用粗细原料混合配合无机结合剂制备,整体致密性得到提升,而外套砖采用氧化铝、高黏土配合无机结合剂制备,最终制成双层砖体,相比现有的镁铬砖而言,含有大量氧化铝的外套砖可让整个砖体承受更高的温度,从而使得本产品在抗热剥落性上得到了大幅度提升,同时,在内砖上下两面均有支撑条,使得内砖上下两面的外套砖的厚度一致,保证了砖体的稳定性,最后,通过在外套砖上开设侧槽和面槽,使得整个砖体在搬运时更方便。
Description
技术领域
本发明涉及镁铬砖技术领域,具体为一种RH炉真空室用镁铬砖及制备方法。
背景技术
RH炉是炉外精炼过程中生产高质量钢材不可或缺的重要设备之一,从目前使用情况来看,制约RH炉寿命的主要环节是真空室下部及插入管部位,这与所用镁铬砖损毁过于严重有直接关系。
由于目前在镁铬砖的生产中普遍采用有机结合剂,有机结合剂在高温烧成砖时会产生分解、挥发,从而会导致材料结构疏松、组织恶化,进而影响材料致密性、抗渣渗透性、抗热剥落性等,同时会伴随产生有害气体,污染环境,另外,现有的镁铬砖成分单一,也是导致其致密性、抗渣渗透性、抗热剥落性较差的原因之一。
鉴于此,本申请提出了一种RH炉真空室用镁铬砖及制备方法。
发明内容
针对现有技术的不足,本发明提供了一种RH炉真空室用镁铬砖及制备方法,具备抗热剥落性强,结构紧密等优点。
为实现上述目的,本发明提供如下技术方案:一种RH炉真空室用镁铬砖,包括内砖,所述内砖的顶部与底部均固定安装有数量为两个的支撑条,所述内砖的外表面设有外套砖。
进一步,所述外套砖的四个棱边均开设为倒角边。
进一步,所述外套砖的两侧均开设有侧槽,外套砖的顶部与底部均开设有面槽。
进一步,所述支撑条的远离内砖的一侧与外套砖的外表面平齐,内砖与支撑条材质相同。
进一步,所述内砖的材料包括镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为55~70%,粒度<0.1毫米的镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为30~45%,重量浓度20~55%的无机结合剂。
进一步,所述外套砖的材料为粒度<0.1毫米的氧化铝粉和粒度<0.5毫米的高黏土粉的混合物,重量浓度15~30%的无机结合剂。
本发明所需要解决的另一个问题是提供一种RH炉真空室用镁铬砖的制备方法,包括以下步骤:
1)首先,将镁砂、铬矿进行粉碎,得到颗粒直径介于0.4-0.6厘米的原矿颗粒;
2)将两种原矿颗粒按照1.15:1.2的比例进行混合,得到混合颗粒;
3)将镁砂和铬矿按照0.75:1的比例混合,得到混合砂;
4)将混合颗粒和混合砂按照1.5:1的比例混合,随后加入总占比10%-20%的无机结合剂,持续混合5分钟,得到内砖砂浆;
5)将内砖砂浆倒入内砖砖模,进行压制,压制过程中伴随振荡器的震动,消除气泡,随后晾干,得到毛坯内砖;
6)将氧化铝粉和高黏土粉按照80%-90%:15%-5%的比例混合,随后倒入总占比为5%-10%的水搅拌,得到外套砖砂浆;
7)将毛坯内砖在装有无机结合剂的池子内浸染3-6秒,然后在成品砖模底部铺设一层外套砖砂浆随后放入毛坯内砖,然后再用外套砖砂浆填满成品砖模,之后进行压制,压制过程前用振荡器进行震动,消除气泡,并在压制过程中升温至500℃,最后得到成品砖。
进一步,所述步骤5)中,在压制毛坯内砖时,内砖和支撑条一体成型。
进一步,所述步骤7)中,毛坯内砖周围的外套砖砂浆厚度基本持平,让毛坯内砖处于整个成品砖的中心位置。
与现有技术相比,本发明提供了一种RH炉真空室用镁铬砖及制备方法,具备以下有益效果:
该RH炉真空室用镁铬砖及制备方法,在内砖表面套一层外套砖,其中,内砖采用粗细原料混合配合无机结合剂制备,整体致密性得到提升,而外套砖采用氧化铝、高黏土配合无机结合剂制备,最终制成双层砖体,相比现有的镁铬砖而言,含有大量氧化铝的外套砖可让整个砖体承受更高的温度,从而使得本产品在抗热剥落性上得到了大幅度提升,同时,在内砖上下两面均有支撑条,使得内砖上下两面的外套砖的厚度一致,保证了砖体的稳定性,最后,通过在外套砖上开设侧槽和面槽,使得整个砖体在搬运时更方便,在砌墙涂抹砂浆后,砖与砖之间更加紧密。
附图说明
图1为本发明结构示意图。
图中:1、内砖;2、支撑条;3、外套砖;4、侧槽;5、顶槽。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅图1,一种RH炉真空室用镁铬砖,包括内砖1,内砖1的顶部与底部均固定安装有数量为两个的支撑条2,内砖1的外表面设有外套砖3。
其中,为了让工人在搬运砖块时不划伤手掌,将外套砖3的四个棱边均开设为倒角边。
其次,通过在外套砖3的两侧均开设侧槽4,同时,在外套砖3的顶部与底部均开设面槽5。使得工人在搬运时更加防滑,搬运时,更加方便,而且,开槽之后,可以涂抹更多砂浆,使得砌出来的墙更加紧密。
需要注意的是,支撑条2的远离内砖1的一侧与外套砖3的外表面平齐,内砖1与支撑条2材质相同,内砖1与支撑条2一体成型,可让内砖1外的外套砖3更加均匀。
本实施例中,内砖1的材料包括镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为55~70%,粒度<0.1毫米的镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为30~45%,重量浓度20~55%的无机结合剂。
本实施例中,外套砖3的材料为粒度<0.1毫米的氧化铝粉和粒度<0.5毫米的高黏土粉的混合物,重量浓度15~30%的无机结合剂。
一种RH炉真空室用镁铬砖的制备方法,包括以下步骤:
1.首先,将镁砂、铬矿进行粉碎,得到颗粒直径介于0.4-0.6厘米的原矿颗粒;
2.将两种原矿颗粒按照1.15:1.2的比例进行混合,得到混合颗粒;
3.将镁砂和铬矿按照0.75:1的比例混合,得到混合砂;
4.将混合颗粒和混合砂按照1.5:1的比例混合,随后加入总占比10%-20%的无机结合剂,持续混合5分钟,得到内砖砂浆;
5.将内砖砂浆倒入内砖砖模,进行压制,压制过程中伴随振荡器的震动,消除气泡,随后晾干,得到毛坯内砖;
6.将氧化铝粉和高黏土粉按照80%-90%:15%-5%的比例混合,随后倒入总占比为5%-10%的水搅拌,得到外套砖砂浆;
7.将毛坯内砖在装有无机结合剂的池子内浸染3-6秒,然后在成品砖模底部铺设一层外套砖砂浆随后放入毛坯内砖,然后再用外套砖砂浆填满成品砖模,之后进行压制,压制过程前用振荡器进行震动,消除气泡,并在压制过程中升温至500℃,最后得到成品砖。
需要注意的是,在步骤7中,毛坯内砖周围的外套砖砂浆厚度基本持平,让毛坯内砖处于整个成品砖的中心位置。
本实施例在使用时,在内砖1表面套一层外套砖4,其中,内砖1采用粗细原料混合配合无机结合剂制备,整体致密性得到提升,而外套砖4采用氧化铝、高黏土配合无机结合剂制备,最终制成双层砖体,相比现有的镁铬砖而言,含有大量氧化铝的外套砖4可让整个砖体承受更高的温度,从而使得本产品在抗热剥落性上得到了大幅度提升,同时,在内砖1上下两面均有支撑条2,使得内砖1上下两面的外套砖4的厚度一致,保证了砖体的稳定性,最后,通过在外套砖4上开设侧槽4和面槽5,使得整个砖体在搬运时更方便,在砌墙涂抹砂浆后,砖与砖之间更加紧密。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (9)
1.一种RH炉真空室用镁铬砖,包括内砖(1),其特征在于:所述内砖(1)的顶部与底部均固定安装有数量为两个的支撑条(2),所述内砖(1)的外表面设有外套砖(3)。
2.根据权利要求1所述的一种RH炉真空室用镁铬砖,其特征在于:所述外套砖(3)的四个棱边均开设为倒角边。
3.根据权利要求1所述的一种RH炉真空室用镁铬砖,其特征在于:所述外套砖(3)的两侧均开设有侧槽(4),外套砖(3)的顶部与底部均开设有面槽(5)。
4.根据权利要求1所述的一种RH炉真空室用镁铬砖,其特征在于:所述支撑条(2)的远离内砖(1)的一侧与外套砖(3)的外表面平齐,内砖(1)与支撑条(2)材质相同。
5.根据权利要求1所述的一种RH炉真空室用镁铬砖,其特征在于:所述内砖(1)的材料包括镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为55~70%,粒度<0.1毫米的镁砂、铬矿、镁砂以及铬矿两种任意比例的混合物为30~45%,重量浓度20~55%的无机结合剂。
6.根据权利要求1所述的一种RH炉真空室用镁铬砖,其特征在于:所述外套砖(3)的材料为粒度<0.1毫米的氧化铝粉和粒度<0.5毫米的高黏土粉的混合物,重量浓度15~30%的无机结合剂。
7.一种RH炉真空室用镁铬砖的制备方法,其特征在于,包括以下步骤:
1)首先,将镁砂、铬矿进行粉碎,得到颗粒直径介于0.4-0.6厘米的原矿颗粒;
2)将两种原矿颗粒按照1.15:1.2的比例进行混合,得到混合颗粒;
3)将镁砂和铬矿按照0.75:1的比例混合,得到混合砂;
4)将混合颗粒和混合砂按照1.5:1的比例混合,随后加入总占比10%-20%的无机结合剂,持续混合5分钟,得到内砖砂浆;
5)将内砖砂浆倒入内砖砖模,进行压制,压制过程中伴随振荡器的震动,消除气泡,随后晾干,得到毛坯内砖;
6)将氧化铝粉和高黏土粉按照80%-90%:15%-5%的比例混合,随后倒入总占比为5%-10%的水搅拌,得到外套砖砂浆;
7)将毛坯内砖在装有无机结合剂的池子内浸染3-6秒,然后在成品砖模底部铺设一层外套砖砂浆随后放入毛坯内砖,然后再用外套砖砂浆填满成品砖模,之后进行压制,压制过程前用振荡器进行震动,消除气泡,并在压制过程中升温至500℃,最后得到成品砖。
8.根据权利要求7所述的一种RH炉真空室用镁铬砖的制备方法,其特征在于:所述步骤5)中,在压制毛坯内砖时,内砖(1)和支撑条(2)一体成型。
9.根据权利要求7所述的一种RH炉真空室用镁铬砖的制备方法,其特征在于:所述步骤7)中,毛坯内砖周围的外套砖砂浆厚度基本持平,让毛坯内砖处于整个成品砖的中心位置。
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